JPH11227645A - Rubber crawler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rubber crawler of a new structure, whereby in particular, the traction force is heightened. SOLUTION: Metal cores 2 laid in line at certain intervals and a steel cord 8 enclosing them are embedded in a rubber-like endless member 1, and a rubber lug 9 is formed for the cores 2. A spatula-shaped member 10 is furnished as protruding from the cores 2 and reaching the inside of the rubber lug 9. This structure prevents the rubber lug from buckling, and a high traction force is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel structure of a rubber crawler, and more particularly to a method for increasing traction.

[0002]

2. Description of the Related Art There are various structures in conventional rubber crawlers, but many rubber crawlers used for wet and semi-wet fields are provided with rubber lugs extending linearly in the width direction of the rubber crawlers. . FIG. 8 is a plan view of an outer peripheral surface side of a rubber crawler showing an example thereof. A long rubber lug 22 over the entire length in the width direction and a short rubber lug 23 formed at the center are alternately formed on the outer peripheral surface of the rubber crawler 21. The center of the rubber crawler supports the weight of the fuselage and the left and right regions provide traction.

[0003] As can be seen from the figure, there is no short rubber lug 23 in the left and right regions, and even if muddy soil adheres to the outer peripheral surface of the rubber crawler, there is a width between the rubber lugs (between the lugs 22, 22). -Mud and the like adhering to the outer peripheral surface of the roller are relatively easy to fall off, so that the rubber crawler exerts a sufficient traction force. However, since the long rubber lug 22 and the short rubber lug 23 exist in the central area, and the gap between the rubber lugs (between the rubber lugs 22 and 23) is narrow, the mud adhering therebetween is hard to fall down and the traction force is not exerted to the left.

[0004] In such a rubber crawler, the traction force can be increased by first increasing the height of the rubber lug, but this time the rubber lug buckles, and as a result, the traction force is reduced. Further, wear of the rubber lug and increase in the chipping of the rubber are caused, and the durability is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and a reinforcing material is buried in a rubber lug to increase the rigidity of the rubber lug. The object of the present invention is to provide a rubber crawler which can increase the height of a rubber lug and has excellent traction.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the gist of the present invention is to provide a rubber-like endless body and a metal core arranged side by side at a constant pitch;
A rubber crawler in which a steel cord surrounding the steel bar is embedded and a rubber lug is formed with respect to the core bar, and a spatula-shaped member protruding from the core bar and reaching the rubber lug is provided. It is a rubber crawler characterized by these.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The rubber crawler according to the present invention is obtained by extending a spatula-shaped member from a core metal into a rubber lug as a reinforcing material for preventing buckling of the rubber lug. Accordingly, the spatula-shaped member increases the rigidity of the rubber lug and increases the traction force, and the core metal itself does not need to contribute to the rigidity of the rubber lug. The shape of the spatula-shaped member is not particularly limited, but is preferably long in the width direction together with the rubber lug with respect to the rubber lug arranged long in the width direction of the rubber crawler. Further, the spatula-shaped member may be completely integrated with the cored bar, but may be a member fitted to the wing of the cored bard depending on the case.

It is preferable that the core metal having such a characteristic be used for all the core metals used in the rubber crawler. However, in some cases, this core metal is used every other core or every several pitches. It alone provides high traction.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The rubber crawler of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a plan view of an outer surface side of a rubber crawler according to the present invention, FIG. 2 is a sectional view taken along line AA, and FIG. 3 is a sectional view taken along line BB. In the figure, reference numeral 1 denotes a rubber-like endless body, which is continuous in the vertical direction. Reference numeral 2 denotes a metal core, left and right wing portions 3 and 4 are embedded in a rubber endless body 1, a center portion 5 is a sprocket engaging portion, and a pair of inner peripheral surfaces of the rubber endless body 1 is formed. Detachment prevention corners 6 and 7 are formed. A steel cord 8 is buried in the longitudinal direction of the rubber endless body 1 so as to surround the outer peripheral sides of the wing portions 3 and 4. In the illustrated example, a rubber lug 9 is provided linearly in the width direction on the outer surface of the rubber-like endless body 1 corresponding to the cored bar 2 to provide a traction force.

[0010] Now, reference numeral 10 ₁ is a spatula-like member,
The rubber lug 9 extends from the outer surfaces of the wings 3 and 4 of the metal core 1 to the center of the height of the rubber lug 9, and has a spatula shape extending in the width direction of the rubber endless body 1. For this reason, the rubber lug 9 has an increased rigidity, so that the occurrence of buckling is reduced and the rubber lug 9 having a relatively high height can be formed. In addition, although the example which provided the spatula-shaped member 10 ₁ one by one at both ends of the wing parts 3 and 4 was shown, it is not limited to this, and although not shown, a plurality of the wing parts 3 and 4 are formed. Further, it can be formed in the central portion 5 of the cored bar 2.

FIG. 4 is a sectional view taken along the line AA of FIG. 2 showing the second example, and FIG. 5 is a sectional view taken along the line CC. Such paddle member 10 ₂ outer enclosure wings 3,4 Steel - Turkey -
And extends from the metal core 2 in an L-shape so as to cover the door 8. Therefore, in this case, the rigidity of Gomuragu 9 for spatula-like member 10 ₂ is inherent over substantially the entire length in the width direction of Gomuragu 9 particularly improved.

FIG. 6 is a sectional view similar to FIG. 2 showing a third example, in which a T-shaped spatula-shaped member 10 ₃ is further added to the central portion 5 of the cored bar 2. This increases the rigidity of the rubber lug 9.

In the above-described example, the spatula-shaped member 10 is integrated with the cored bar 2. However, in some cases, the spatula-shaped member 10 is formed of a member different from the cored bar 2. For example, a spatula member 1 made of metal or nylon resin
0 may be bonded to the outer surface of the metal core 2.

FIG. 7 shows an example in which the spatula-shaped member 10 ₄ is formed separately from the cored bar 2.
Numeral 0 ₄ has a receiving portion 11 that can be fitted to the wing portions 3 and ₄ of the cored bar.
Fitted one in which were rise the spatula-like member _104.

Although the cored bar 2 and the spatula-shaped member 10 may be joined by welding, an adhesive or the like, it is sufficient to embed them in the rubber-like endless body 1 as long as they are securely inserted. If the unvulcanized rubber constituting the base material of the rubber crawler is adhered by the adhesive force at the time of vulcanization, there is no possibility that these are separated.

[0016]

The present invention is as described above. The rigidity of the rubber lug is ensured by the spatula-shaped member connected to the cored bar, whereby the rubber lug does not buckle and the traction force is sufficiently exerted.

[Brief description of the drawings]

FIG. 1 is a plan view of an outer surface side of a rubber crawler according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA.

FIG. 3 is a sectional view taken along line BB.

FIG. 4 is a sectional view taken along line AA of FIG. 2 of the second embodiment of the present invention.

FIG. 5 is a sectional view taken along line CC.

FIG. 6 is a sectional view taken along line AA of FIG. 2 of a third embodiment of the present invention.

FIG. 7 is a perspective view showing a fourth example of the present invention.

FIG. 8 is an outer peripheral side plan view of a conventional rubber crawler.

[Explanation of symbols]

 1 ‥‥ rubber endless body, 2 ‥‥ metal core, 3, 4 ‥‥ metal core wing, 5 ‥‥ core metal center, 6, 7 ‥‥ core metal corner, 8 ‥‥ steel Receiving part for 9 mm rubber lug, 10 mm spatula-shaped member, 11 mm spatula-shaped member.

Claims (1)

[Claims] 1. A metal core arranged side by side at a constant pitch in a rubber-like endless body, and a steel core surrounding the core metal.
A rubber crawler having a rubber lug formed on the cored bar and having a spatular member protruding from the cored bar and reaching the rubber lug.
La.